#include "HX711.h"

// Pin setup for HX711 amplifier
#define DOUT  A1
#define CLK   A0

// Threshold in kg
float thresholdWeight = 2;

HX711 scale;

int ledPin = 13;

void setup() {
  Serial.begin(9600);

  // Initialize HX711
  scale.begin(DOUT, CLK);

  // Calibrate the scale (this value may vary, you can calibrate it manually)
  scale.set_scale(415.f);  // Adjust to match your load cell calibration factor
  scale.tare();  // Reset scale to 0

  // Setup LED pin
  pinMode(ledPin, OUTPUT);
}

void loop() {
  // Get weight in kg
  float weight = scale.get_units(10);  // Average of 10 readings

  // Display weight on serial monitor
  Serial.print("Weight: ");
  Serial.print(weight);
  Serial.println(" kg");

  // Check if the weight exceeds threshold
  if (weight >= thresholdWeight) {
    // Blink LED if the weight exceeds 5kg
    digitalWrite(ledPin, HIGH);
    delay(500);
    digitalWrite(ledPin, LOW);
    delay(500);
  } else {
    // Keep LED off if below threshold
    digitalWrite(ledPin, LOW);
  }

  delay(1000);  // Delay for 1 second before next reading
}